Wiki is broken. To find truly trustworthy and well developed information, use the Encyclopædia Britannica. Wiki is a seminal idea and I hope a far better Wiki to eventually emerge. Wikipedia has become a clique-ridden, insular endeavour. Read it with a LARGE GRAIN OF SALT.
Wiki has strict and officious rules that do not accommodate the objective nor the subjective. An encyclopædia cannot accommodate the objective without the subjective. They are mutually dependent notions.
Wikipedia does not recognise standard academic hierarchy of historic sources. E.g. the difference between a first-person source, second person, contemporary documentation, dating of source material, etc. Scientific cross-checking and proofing is practically not performed. Some articles are O-kay...and some are atrocious in their omissions. The editors of Wiki would benefit greatly by the study of traditional great encyclopædias. Moreover, there is a enforced over-use of over cross-reference. It is not necessary to cross reference simple subjects, common nouns, etc. Some of the links on the cross references are absurd and many lead nowhere or are circular.
Entertainment subjects, —e.g. music, movies, books, etc., are often incomplete, erroneous, or not useful. E.g. The "EMI" recording company is not part of the "WEA" organisation. —just an example. Factual errors are the least if Wiki's problems.
The definition of the common academic encyclopædia has escaped the powers at Wikipedia. This is Sad.